13 Mar, 2010
40 commits
-
Extern declarations in sysctl.c should be moved to their own header file,
and then include them in relavant .c files.Move modprobe_path extern declaration to linux/kmod.h
Move modules_disabled extern declaration to linux/module.hSigned-off-by: Dave Young
Cc: Rusty Russell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Extern declarations in sysctl.c should be moved to their own header file,
and then include them in relavant .c files.Move rcutorture_runnable extern declaration to linux/rcupdate.h
Signed-off-by: Dave Young
Acked-by: Josh Triplett
Reviewed-by: "Paul E. McKenney"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Extern declarations in sysctl.c should be moved to their own header file,
and then include them in relavant .c files.Move print_fatal_signals extern declaration to linux/signal.h
Signed-off-by: Dave Young
Cc: Oleg Nesterov
Cc: Roland McGrath
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Extern declarations in sysctl.c should be moved to their own header file,
and then include them in relavant .c files.Move C_A_D extern variable declaration to linux/reboot.h
Signed-off-by: Dave Young
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The ARM kernel decompressor wants to be able to relocate r/w data
independently from the rest of the image, and we do this by ensuring that
r/w data has global visibility. Define STATIC_RW_DATA to be empty to
achieve this.Signed-off-by: Russell King
Cc: Alain Knaff
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Adds support, by using the PPS line discipline, for the PPS sources
connected with the CD (Carrier Detect) pin of a serial port.[akpm@linux-foundation.org: fix cast size warnings]
Signed-off-by: Rodolfo Giometti
Cc: David Woodhouse
Cc: Greg KH
Cc: Alan Cox
Cc: Alexander Gordeev
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This new method can be used to init a new struct tty_ldisc_ops as the
default tty_ldisc_N_TTY struct.Signed-off-by: Rodolfo Giometti
Cc: David Woodhouse
Cc: Greg KH
Cc: Alan Cox
Cc: Alexander Gordeev
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Rodolfo Giometti
Cc: David Woodhouse
Cc: Greg KH
Cc: Alan Cox
Cc: Alexander Gordeev
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We can use pci-dma-compat.h to implement pci_set_dma_mask and
pci_set_consistent_dma_mask as we do with the other PCI DMA API.We can remove HAVE_ARCH_PCI_SET_DMA_MASK too.
Signed-off-by: FUJITA Tomonori
Cc: Jesse Barnes
Cc: Greg KH
Cc: Kay Sievers
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
dma_set_coherent_mask corresponds to pci_set_consistent_dma_mask. This is
necessary to move to the generic device model DMA API from the PCI bus
specific API in the long term.dma_set_coherent_mask works in the exact same way that
pci_set_consistent_dma_mask does. So this patch also changes
pci_set_consistent_dma_mask to call dma_set_coherent_mask.Signed-off-by: FUJITA Tomonori
Cc: James Bottomley
Cc: David S. Miller
Cc: Jesse Barnes
Cc: Benjamin Herrenschmidt
Cc: Russell King
Cc: Greg KH
Cc: Kay Sievers
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Adds the following macros:
DECLARE_DMA_UNMAP_ADDR(ADDR_NAME)
DECLARE_DMA_UNMAP_LEN(LEN_NAME)
dma_unmap_addr(PTR, ADDR_NAME)
dma_unmap_addr_set(PTR, ADDR_NAME, VAL)
dma_unmap_len(PTR, LEN_NAME)
dma_unmap_len_set(PTR, LEN_NAME, VAL)The API corresponds to the pci_unmap state API. We'll move to this new
generic API from the PCI specific API in the long term. As
include/asm-generic/pci-dma-compat.h does, the pci_unmap API simply calls
the new generic API for some time.Signed-off-by: FUJITA Tomonori
Cc: James Bottomley
Cc: David S. Miller
Cc: Jesse Barnes
Cc: Arnd Bergmann
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
All the architectures properly set NEED_DMA_MAP_STATE now so we can safely
add linux/pci-dma.h to linux/pci.h and remove the linux/pci-dma.h
inclusion in arch's asm/pci.hSigned-off-by: FUJITA Tomonori
Acked-by: Arnd Bergmann
Cc: Jesse Barnes
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch adds include/linux/pci-dma.h that defines the pci_unmap state
API:DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
DECLARE_PCI_UNMAP_LEN(LEN_NAME)
pci_unmap_addr(PTR, ADDR_NAME)
pci_unmap_addr_set(PTR, ADDR_NAME, VAL)
pci_unmap_len(PTR, LEN_NAME)
pci_unmap_len_set(PTR, LEN_NAME, VAL)This enables us to remove lots of the duplication in architecture
implementations since there are only two ways to define the API.If architectures define CONFIG_NEED_DMA_MAP_STATE, they get the real
definition of pci_unmap state API. If not, they get the noop definition.In the long term, it's better to replace the API with the generic device
model API such as DECLARE_DMA_UNMAP_ADDR. We can map the API to the
generic one (like dma-mapping-compat.h does). This patch also makes the
migration process easier. We can remove this file after the migration.It might be simpler to add the API to include/linux/pci.h but looks it's
already too large. We'll remove pci-dma.h after finishing moving to the
generic device model. So I put the API to a separate file.Signed-off-by: FUJITA Tomonori
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: "H. Peter Anvin"
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: Matt Turner
Acked-by: Russell King
Acked-by: David Howells
Cc: Tony Luck
Cc: Ralf Baechle
Cc: Kyle McMartin
Cc: Helge Deller
Cc: James Bottomley
Cc: Benjamin Herrenschmidt
Cc: Paul Mundt
Cc: David S. Miller
Cc: Chris Zankel
Acked-by: Arnd Bergmann
Cc: Jesse Barnes
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove INIT_NSPROXY(), use C99 initializer.
Remove INIT_IPC_NS(), INIT_NET_NS() while I'm at it.Note: headers trim will be done later, now it's quite pointless because
results will be invalidated by merge window.Signed-off-by: Alexey Dobriyan
Acked-by: Serge Hallyn
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
There is no need for linux/ipmi_smi.h to include itself.
Signed-off-by: Corey Minyard
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove unneeded initializations in thread_group_cputime_init() and in
posix_cpu_timers_init_group(). They are useless after kmem_cache_zalloc()
was used in copy_signal().Signed-off-by: Veaceslav Falico
Acked-by: Oleg Nesterov
Cc: Roland McGrath
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Kill unused functions taskstats_tgid_init() and acct_init_pacct() because
we don't use them anywhere after using kmem_cache_zalloc() in
copy_signal().Signed-off-by: Veaceslav Falico
Cc: Roland McGrath
Cc: Oleg Nesterov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
While in theory user_enable_single_step/user_disable_single_step/
user_enable_blockstep could also be provided as an inline or macro there's
no good reason to do so, and having the prototype in one places keeps code
size and confusion down.Roland said:
The original thought there was that user_enable_single_step() et al
might well be only an instruction or three on a sane machine (as if we
have any of those!), and since there is only one call site inlining
would be beneficial. But I agree that there is no strong reason to care
about inlining it.As to the arch changes, there is only one thought I'd add to the
record. It was always my thinking that for an arch where
PTRACE_SINGLESTEP does text-modifying breakpoint insertion,
user_enable_single_step() should not be provided. That is,
arch_has_single_step()=>true means that there is an arch facility with
"pure" semantics that does not have any unexpected side effects.
Inserting a breakpoint might do very unexpected strange things in
multi-threaded situations. Aside from that, it is a peculiar side
effect that user_{enable,disable}_single_step() should cause COW
de-sharing of text pages and so forth. For PTRACE_SINGLESTEP, all these
peculiarities are the status quo ante for that arch, so having
arch_ptrace() itself do those is one thing. But for building other
things in the future, it is nicer to have a uniform "pure" semantics
that arch-independent code can expect.OTOH, all such arch issues are really up to the arch maintainer. As
of today, there is nothing but ptrace using user_enable_single_step() et
al so it's a distinction without a practical difference. If/when there
are other facilities that use user_enable_single_step() and might care,
the affected arch's can revisit the question when someone cares about
the quality of the arch support for said new facility.Signed-off-by: Christoph Hellwig
Cc: Oleg Nesterov
Cc: Roland McGrath
Acked-by: David Howells
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
we can't declarate two variable at the same scope by NODEMASK_ALLOC().
This patch fixes it.
Signed-off-by: Miao Xie
Cc: David Rientjes
Cc: Lee Schermerhorn
Cc: Nick Piggin
Cc: Paul Menage
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
In current page-fault code,
handle_mm_fault()
-> ...
-> mem_cgroup_charge()
-> map page or handle error.
-> check return code.If page fault's return code is VM_FAULT_OOM, page_fault_out_of_memory() is
called. But if it's caused by memcg, OOM should have been already
invoked.Then, I added a patch: a636b327f731143ccc544b966cfd8de6cb6d72c6. That
patch records last_oom_jiffies for memcg's sub-hierarchy and prevents
page_fault_out_of_memory from being invoked in near future.But Nishimura-san reported that check by jiffies is not enough when the
system is terribly heavy.This patch changes memcg's oom logic as.
* If memcg causes OOM-kill, continue to retry.
* remove jiffies check which is used now.
* add memcg-oom-lock which works like perzone oom lock.
* If current is killed(as a process), bypass charge.Something more sophisticated can be added but this pactch does
fundamental things.
TODO:
- add oom notifier
- add permemcg disable-oom-kill flag and freezer at oom.
- more chances for wake up oom waiter (when changing memory limit etc..)Reviewed-by: Daisuke Nishimura
Tested-by: Daisuke Nishimura
Signed-off-by: KAMEZAWA Hiroyuki
Cc: Balbir Singh
Cc: David Rientjes
Signed-off-by: Daisuke Nishimura
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Events should be removed after rmdir of cgroup directory, but before
destroying subsystem state objects. Let's take reference to cgroup
directory dentry to do that.Signed-off-by: Kirill A. Shutemov
Acked-by: KAMEZAWA Hiroyuki
Cc: Paul Menage
Acked-by: Li Zefan
Cc: Balbir Singh
Cc: Pavel Emelyanov
Cc: Dan Malek
Cc: Daisuke Nishimura
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patchset introduces eventfd-based API for notifications in cgroups
and implements memory notifications on top of it.It uses statistics in memory controler to track memory usage.
Output of time(1) on building kernel on tmpfs:
Root cgroup before changes:
make -j2 506.37 user 60.93s system 193% cpu 4:52.77 total
Non-root cgroup before changes:
make -j2 507.14 user 62.66s system 193% cpu 4:54.74 total
Root cgroup after changes (0 thresholds):
make -j2 507.13 user 62.20s system 193% cpu 4:53.55 total
Non-root cgroup after changes (0 thresholds):
make -j2 507.70 user 64.20s system 193% cpu 4:55.70 total
Root cgroup after changes (1 thresholds, never crossed):
make -j2 506.97 user 62.20s system 193% cpu 4:53.90 total
Non-root cgroup after changes (1 thresholds, never crossed):
make -j2 507.55 user 64.08s system 193% cpu 4:55.63 totalThis patch:
Introduce the write-only file "cgroup.event_control" in every cgroup.
To register new notification handler you need:
- create an eventfd;
- open a control file to be monitored. Callbacks register_event() and
unregister_event() must be defined for the control file;
- write " " to cgroup.event_control.
Interpretation of args is defined by control file implementation;eventfd will be woken up by control file implementation or when the
cgroup is removed.To unregister notification handler just close eventfd.
If you need notification functionality for a control file you have to
implement callbacks register_event() and unregister_event() in the
struct cftype.[kamezawa.hiroyu@jp.fujitsu.com: Kconfig fix]
Signed-off-by: Kirill A. Shutemov
Reviewed-by: KAMEZAWA Hiroyuki
Paul Menage
Cc: Li Zefan
Cc: Balbir Singh
Cc: Pavel Emelyanov
Cc: Dan Malek
Cc: Vladislav Buzov
Cc: Daisuke Nishimura
Cc: Alexander Shishkin
Cc: Davide Libenzi
Signed-off-by: KAMEZAWA Hiroyuki
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch is another core part of this move-charge-at-task-migration
feature. It enables moving charges of anonymous swaps.To move the charge of swap, we need to exchange swap_cgroup's record.
In current implementation, swap_cgroup's record is protected by:
- page lock: if the entry is on swap cache.
- swap_lock: if the entry is not on swap cache.This works well in usual swap-in/out activity.
But this behavior make the feature of moving swap charge check many
conditions to exchange swap_cgroup's record safely.So I changed modification of swap_cgroup's recored(swap_cgroup_record())
to use xchg, and define a new function to cmpxchg swap_cgroup's record.This patch also enables moving charge of non pte_present but not uncharged
swap caches, which can be exist on swap-out path, by getting the target
pages via find_get_page() as do_mincore() does.[kosaki.motohiro@jp.fujitsu.com: fix ia64 build]
[akpm@linux-foundation.org: fix typos]
Signed-off-by: Daisuke Nishimura
Cc: Balbir Singh
Acked-by: KAMEZAWA Hiroyuki
Cc: Li Zefan
Cc: Paul Menage
Cc: Daisuke Nishimura
Signed-off-by: KOSAKI Motohiro
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Modify the Block I/O cgroup subsystem to be able to be built as a module.
As the CFQ disk scheduler optionally depends on blk-cgroup, config options
in block/Kconfig, block/Kconfig.iosched, and block/blk-cgroup.h are
enhanced to support the new module dependency.Signed-off-by: Ben Blum
Cc: Li Zefan
Cc: Paul Menage
Cc: "David S. Miller"
Cc: KAMEZAWA Hiroyuki
Cc: Lai Jiangshan
Cc: Vivek Goyal
Cc: Jens Axboe
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Provides support for unloading modular subsystems.
This patch adds a new function cgroup_unload_subsys which is to be used
for removing a loaded subsystem during module deletion. Reference
counting of the subsystems' modules is moved from once (at load time) to
once per attached hierarchy (in parse_cgroupfs_options and
rebind_subsystems) (i.e., 0 or 1).Signed-off-by: Ben Blum
Acked-by: Li Zefan
Cc: Paul Menage
Cc: "David S. Miller"
Cc: KAMEZAWA Hiroyuki
Cc: Lai Jiangshan
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add interface between cgroups subsystem management and module loading
This patch implements rudimentary module-loading support for cgroups -
namely, a cgroup_load_subsys (similar to cgroup_init_subsys) for use as a
module initcall, and a struct module pointer in struct cgroup_subsys.Several functions that might be wanted by modules have had EXPORT_SYMBOL
added to them, but it's unclear exactly which functions want it and which
won't.Signed-off-by: Ben Blum
Acked-by: Li Zefan
Cc: Paul Menage
Cc: "David S. Miller"
Cc: KAMEZAWA Hiroyuki
Cc: Lai Jiangshan
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch series provides the ability for cgroup subsystems to be
compiled as modules both within and outside the kernel tree. This is
mainly useful for classifiers and subsystems that hook into components
that are already modules. cls_cgroup and blkio-cgroup serve as the
example use cases for this feature.It provides an interface cgroup_load_subsys() and cgroup_unload_subsys()
which modular subsystems can use to register and depart during runtime.
The net_cls classifier subsystem serves as the example for a subsystem
which can be converted into a module using these changes.Patch #1 sets up the subsys[] array so its contents can be dynamic as
modules appear and (eventually) disappear. Iterations over the array are
modified to handle when subsystems are absent, and the dynamic section of
the array is protected by cgroup_mutex.Patch #2 implements an interface for modules to load subsystems, called
cgroup_load_subsys, similar to cgroup_init_subsys, and adds a module
pointer in struct cgroup_subsys.Patch #3 adds a mechanism for unloading modular subsystems, which includes
a more advanced rework of the rudimentary reference counting introduced in
patch 2.Patch #4 modifies the net_cls subsystem, which already had some module
declarations, to be configurable as a module, which also serves as a
simple proof-of-concept.Part of implementing patches 2 and 4 involved updating css pointers in
each css_set when the module appears or leaves. In doing this, it was
discovered that css_sets always remain linked to the dummy cgroup,
regardless of whether or not any subsystems are actually bound to it
(i.e., not mounted on an actual hierarchy). The subsystem loading and
unloading code therefore should keep in mind the special cases where the
added subsystem is the only one in the dummy cgroup (and therefore all
css_sets need to be linked back into it) and where the removed subsys was
the only one in the dummy cgroup (and therefore all css_sets should be
unlinked from it) - however, as all css_sets always stay attached to the
dummy cgroup anyway, these cases are ignored. Any fix that addresses this
issue should also make sure these cases are addressed in the subsystem
loading and unloading code.This patch:
Make subsys[] able to be dynamically populated to support modular
subsystemsThis patch reworks the way the subsys[] array is used so that subsystems
can register themselves after boot time, and enables the internals of
cgroups to be able to handle when subsystems are not present or may
appear/disappear.Signed-off-by: Ben Blum
Acked-by: Li Zefan
Cc: Paul Menage
Cc: "David S. Miller"
Cc: KAMEZAWA Hiroyuki
Cc: Lai Jiangshan
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Current css_get() and css_put() increment/decrement css->refcnt one by
one.This patch add a new function __css_get(), which takes "count" as a arg
and increment the css->refcnt by "count". And this patch also add a new
arg("count") to __css_put() and change the function to decrement the
css->refcnt by "count".These coalesce version of __css_get()/__css_put() will be used to improve
performance of memcg's moving charge feature later, where instead of
calling css_get()/css_put() repeatedly, these new functions will be used.No change is needed for current users of css_get()/css_put().
Signed-off-by: Daisuke Nishimura
Acked-by: Paul Menage
Cc: Balbir Singh
Acked-by: KAMEZAWA Hiroyuki
Cc: Li Zefan
Cc: Daisuke Nishimura
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add cancel_attach() operation to struct cgroup_subsys. cancel_attach()
can be used when can_attach() operation prepares something for the subsys,
but we should rollback what can_attach() operation has prepared if attach
task fails after we've succeeded in can_attach().Signed-off-by: Daisuke Nishimura
Acked-by: Li Zefan
Reviewed-by: Paul Menage
Cc: Balbir Singh
Acked-by: KAMEZAWA Hiroyuki
Cc: Daisuke Nishimura
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch adds waveform storing capability to broadsheetfb. It uses the
firmware class to retrieve the waveform, and the request to initiate the
waveform storing is done via a driver sysfs entry, loadstore_waveform.Broadsheet is a framebuffer device. It is slightly different from a
typical framebuffer controller that drives a normal TFT-LCD display. Most
E-Ink display panels require a waveform in order to function. That is, in
order to drive the state of a pixel to black, gray, or white, a specific
waveform is utilized. Basically, that waveform represents the specific
E-field wiggling needed to get the pixel to its optimal state given
current temperature, and its previous state. TN/IPS-LCDs use a similar
concept but the driving waveform is sufficiently simple that it is
internalized in the TFT source/gate driver.These E-Ink waveforms are specific to a production batch. That is, a
batch of display films are produced, then they get characterized and a
waveform is generated for that batch. Broadsheet, typically, is attached
to its private SPI flash which is then flashed with this waveform.Users won't be able to see the waveform and typically won't ever need to
know about it. If however, the display panel attached to broadsheet is
changed out, then they will need to update their waveform. That would
typically be done at a factory or repair facility rather than by a user.[akpm@linux-foundation.org: fix printk warning]
Signed-off-by: Jaya Kumar
Cc: Geert Uytterhoeven
Cc: Krzysztof Helt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Allow boards with GP-MMIO controllers to provide hooks to broadsheetfb in
order to offload cmd/data writes and data reads instead of relying only on
host based GPIO wiggling.Signed-off-by: Jaya Kumar
Cc: Geert Uytterhoeven
Cc: Krzysztof Helt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Update broadsheetfb to add support for multiple panel types. The 3.7" and
6" are known to work but the 9.7" is untested due to lack of hardware.Signed-off-by: Jaya Kumar
Cc: Geert Uytterhoeven
Cc: Krzysztof Helt
Cc: Russell King
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
After having started writing the coredump, if filesystem reports an error
anytime while writing part of the core file, we would leak a memory page
when bailing out.Signed-off-by: André Goddard Rosa
Acked-by: KOSAKI Motohiro
Cc: Alexander Viro
Cc: Roland McGrath
Cc: WANG Cong
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add generic implementations of the old and really old uname system calls.
Note that sh only implements sys_olduname but not sys_oldolduname, but I'm
not going to bother with another ifdef for that special case.m32r implemented an old uname but never wired it up, so kill it, too.
Signed-off-by: Christoph Hellwig
Cc: Ralf Baechle
Cc: Benjamin Herrenschmidt
Cc: Paul Mundt
Cc: Jeff Dike
Cc: Hirokazu Takata
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: H. Peter Anvin
Cc: Al Viro
Cc: Arnd Bergmann
Cc: Heiko Carstens
Cc: Martin Schwidefsky
Cc: "Luck, Tony"
Cc: James Morris
Cc: Andreas Schwab
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add a generic implementation of the ipc demultiplexer syscall. Except for
s390 and sparc64 all implementations of the sys_ipc are nearly identical.There are slight differences in the types of the parameters, where mips
and powerpc as the only 64-bit architectures with sys_ipc use unsigned
long for the "third" argument as it gets casted to a pointer later, while
it traditionally is an "int" like most other paramters. frv goes even
further and uses unsigned long for all parameters execept for "ptr" which
is a pointer type everywhere. The change from int to unsigned long for
"third" and back to "int" for the others on frv should be fine due to the
in-register calling conventions for syscalls (we already had a similar
issue with the generic sys_ptrace), but I'd prefer to have the arch
maintainers looks over this in details.Except for that h8300, m68k and m68knommu lack an impplementation of the
semtimedop sub call which this patch adds, and various architectures have
gets used - at least on i386 it seems superflous as the compat code on
x86-64 and ia64 doesn't even bother to implement it.[akpm@linux-foundation.org: add sys_ipc to sys_ni.c]
Signed-off-by: Christoph Hellwig
Cc: Ralf Baechle
Cc: Benjamin Herrenschmidt
Cc: Paul Mundt
Cc: Jeff Dike
Cc: Hirokazu Takata
Cc: Thomas Gleixner
Cc: Ingo Molnar
Reviewed-by: H. Peter Anvin
Cc: Al Viro
Cc: Arnd Bergmann
Cc: Heiko Carstens
Cc: Martin Schwidefsky
Cc: "Luck, Tony"
Cc: James Morris
Cc: Andreas Schwab
Acked-by: Jesper Nilsson
Acked-by: Russell King
Acked-by: David Howells
Acked-by: Kyle McMartin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add a generic implementation of the old mmap() syscall, which expects its
argument in a memory block and switch all architectures over to use it.Signed-off-by: Christoph Hellwig
Cc: Ralf Baechle
Cc: Benjamin Herrenschmidt
Cc: Paul Mundt
Cc: Jeff Dike
Cc: Hirokazu Takata
Cc: Thomas Gleixner
Cc: Ingo Molnar
Reviewed-by: H. Peter Anvin
Cc: Al Viro
Cc: Arnd Bergmann
Cc: Heiko Carstens
Cc: Martin Schwidefsky
Cc: "Luck, Tony"
Cc: James Morris
Cc: Andreas Schwab
Acked-by: Jesper Nilsson
Acked-by: Russell King
Acked-by: Greg Ungerer
Acked-by: David Howells
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add a generic implementation of the old select() syscall, which expects
its argument in a memory block and switch all architectures over to use
it.Signed-off-by: Christoph Hellwig
Cc: Ralf Baechle
Cc: Benjamin Herrenschmidt
Cc: Paul Mundt
Cc: Jeff Dike
Cc: Hirokazu Takata
Cc: Thomas Gleixner
Cc: Ingo Molnar
Reviewed-by: H. Peter Anvin
Cc: Al Viro
Cc: Arnd Bergmann
Cc: Heiko Carstens
Cc: Martin Schwidefsky
Cc: "Luck, Tony"
Cc: James Morris
Acked-by: Andreas Schwab
Acked-by: Russell King
Acked-by: Greg Ungerer
Acked-by: David Howells
Cc: Andreas Schwab
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
- introduce dump_page() to print the page info for debugging some error
condition.- convert three mm users: bad_page(), print_bad_pte() and memory offline
failure.- print an extra field: the symbolic names of page->flags
Example dump_page() output:
[ 157.521694] page:ffffea0000a7cba8 count:2 mapcount:1 mapping:ffff88001c901791 index:0x147
[ 157.525570] page flags: 0x100000000100068(uptodate|lru|active|swapbacked)Signed-off-by: Wu Fengguang
Cc: Ingo Molnar
Cc: Alex Chiang
Cc: Rik van Riel
Cc: Andi Kleen
Cc: Mel Gorman
Cc: Christoph Lameter
Cc: KOSAKI Motohiro
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Commit 34e55232e59f7b19050267a05ff1226e5cd122a5 ("mm: avoid false sharing
of mm_counter") added sync_mm_rss() for syncing loosely accounted rss
counters. It's for CONFIG_MMU but sync_mm_rss is called even in NOMMU
enviroment (kerne/exit.c, fs/exec.c). Above commit doesn't handle it
well.This patch changes
SPLIT_RSS_COUNTING depends on SPLIT_PTLOCKS && CONFIG_MMUAnd for avoid unnecessary function calls, sync_mm_rss changed to be inlined
noop function in header file.Reported-by: David Howells
Signed-off-by: KAMEZAWA Hiroyuki
Signed-off-by: Mike Frysinger
Signed-off-by: Michal Simek
Signed-off-by: David Howells
Cc: Greg Ungerer
Cc: Geert Uytterhoeven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Without this patch /sys/class/rtc/$CONFIG_RTC_HCTOSYS_DEVICE/hctosys
contains a 1 (meaning "This rtc was used to initialize the system clock")
even if reading the time at bootup failed.Moreover change error handling in rtc_hctosys() to use goto and so reduce
the indention level.Signed-off-by: Uwe Kleine-König
Cc: Paul Gortmaker
Acked-by: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
